Madagascar 2

I found that attempting this after you have hit the hut 2/6 or 3/6 times is best. I tried getting 4 balloons after hitting the hut 5/6 times but I struggled getting 4 balloons together as they kept flying at me after they spawned. After hitting the hut 2/6 or 3/6 times, the balloons spawn and wait awhile before coming after you, giving you enough time to group 4 together and fire a durian in the middle to pop all 4.

MINI GAME in DAMBUSTERS

Use the durian to hit the hut 4/5 times so more balloons spawn. clear the balloons around you and wait till 5 balloons spawn/move just to the right of the hut, aim at the central one(on the right side of the hut) with just over 3/4 power and you should take out 4. The balloons keep respawning until you destroy the hut so you have plenty of attempts here